Calculating-machine.



NO MODEL.

I PATENTED NOV. 17, 1903 .C. STAHLBERG.

CALCULATING MACHINE.

APPLICATION FILED MAR. 31, 1902.

18 8HEETS-SHBET 1,

- N PATENTED NOV. 17 1903.

744697 0. STAHLBERG.

CALCULATING MACHINE.

PPLIOATION FILED MAR. 31(1902 18 SHEETS-$HEET 2.

no MODEL.

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C. STAHLBERG. CALCULATING MACHINE.

APPLICATION FILED MAR. 31. 1902.

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NO MODEL.

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PATENTED NOV. 17, 1903.

C. STAHLBERG. CALCULATING MACHINE.

APPLICATION FILED MAR. 31, 1902. NO opm. 1s SHEBTSSHEET 4 M We No. 744,697. PATENTED NOV. 17, 1903.

G. STAHLBERG.

CALCULATING MACHINE.

APPLIOATION FILED MAR. 31, 1902.

18 SHEETSSHEBT 5.

N0 MODEL.

PATENTED NOV. 1'7, 1903.

18 SHEETS-SHEET e.

G. STAHLBERG. GALGULATING MACHINE.

APPLIOATION FILED MAR. 31, 1902.

N0 MODEL.

N0. 744,697. PATENTED NOV 17, 1903. G. STAHLBERG. CALCULATING MAGHINE.

APPLICATION FILED MAR. 31, 1902. H0 MODEL. 18 SHEETSSHBBT 7.

wwiiw 7%5 63 No. 744,697. PATENTED NOV. 17, 1903. C STAHLBERG CALCULATING MACHINE.

APPLICATION FILED MAR. 31, 1.90.2; NO MODEL. 18 SHEETS-SHEET 8.

CALCULATING MACHINE.

APPLIOATION FILED MAR. 31. 1902v 18 SHEETS-SHEET 9.

N0 MODEL.

No. 744,697. PATENTBD NOV. 1'7, 1903.

G. STAHLBBRG.

CALCULATING MACHINE.

APPLIOATION FILED MAR. 31, 1902 1BSHEETS-SHEET 10.

N0 MODEL.

v y Char/651572670556 N PATENTED NOV. 17 1903.

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CALCULATING MACHINE.

. APPLICATION FILED MAR. 31, 1902. N0 MODEL. 18 SHEETSSHEET 11.

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CALCULATING MACHINE.

APPLICATION FILED MAR. 31, 1902. NO MODEL. 18 SHEETS-SHEET 12.

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PATENTED NOV. 17, 1903.

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CALCULATING MACHINE.

- APPLICATION FILED MAR. 31, 1902.

no MODEL. 1

PATENTED NOV. 17, 1903.

C. STAHLBERG. CALCULATING MACHINE.

APPLIOATION FILED MAR. 31, 1902.

18 SHEETS-SHEET 14.

N0 MODEL.

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PATENTED NOV. 17, 1903.

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G. STAHLBERG.

CALCULATING MACHINE. APPLICATION FILED MAR. 31. 1902.

N0 MODEL.

N 44,697. PATENTED NOV. 17 1903.

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CALCULATING MACHINE.

APPLICATION FILED MAR. 31, 1902. N0 IODBL.

18 SHEETS-SHEET 16.

. am%%ZZary N0. 744,697. PATENTED NOV. 17, 1903. G. STAHLBERG. CALCULATING MACHINE.

APPLICATION FILED MAR. 31. 1902. NO MODEL. 18 SHEETSSHEET 17- 5 iii 5 I Um: w mlmmmunmmumm N 44 9 PATENTED NOV. 17 1903.

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CALCULATING MACHINE.

APPLICATION FILED MAR. 31, 1902. N0 MODEL. 18 SHEETSSHEBT 18.

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UNITED STATES Patented November 17', 1903.

PATENT Orrrce.

CALCULATING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 744,697, dated November 17, 1903.

Application filed March 31, 1902.

To all whom it may concern/.2

Be it known that I, CHARLES STAHLBERG, a citizen of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Improvement in Calculating-Machines, of which the following is a full, clear,

, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a side elevational View of my improved calculating-machine. Fig. 2 is a plan View. Fig. 3 is alongitudinal verticalsectional view. Fig. 4 is a side elevational view,a part of the casing being broken away to more clearly show the interior mechanism. Fig. 5 is a vertical longitudinal sectional view through the keyboard, showing the parts in full size. Fig. (5' is a similar view showing the rear portion of the machine. Fig. 7 is a side elevational view of the rear portion of the machine, the casing being removed. Fig. 8 is a similar view showing the opposite or left-hand side of the ma- Fig. 9 is a front elevational view, partly in section, of the keyboard. Fig. 10 is a plan View, partly in section, of the keyboard. Fig. 11 is a plan view of a portion of the rear part of the machine. Fig. 12 is a sectional view on line 12 12, Fig. Fig. 13 is a detail view. Fig. lllS a sectional view 011 line 14 14, Fig. 8. Fig. 15 is a sectional view on line 15 15, Fig. (5. Fig. 16 is a vertical sectional view through the rear upper portion of the machine, showing the printing-head and its contained mechanism. Fig. 17 isahorizontal sectional view through said printing-head. Fig. 18 is a front elevational view, partly in section, of said printing-head. Fig. 19 is a side elevationalview of the forward portion of said printing-head as seen from the lefthand side of the machine. Fig. 20 is aside elevational view of a part of the carrying mechanism. Fig. 21 is an edge elevational view of the same, partly in section. Fig. 22 is a top plan view of the same. Fig. 23 is a sectional view on line 23 23, Fig. 20. Fig. 24: is a sectional view on line 24 24:, Fig. 20. Fig. 25 is an inverted plan view. Fig. 26 is a sec tional view on line 26 26, Fig. 7, and Fig. 27 is a side elevational view of a portion of the mechanism shown in Fig. 26. Figs. 28 to 30 Serial No. 100,789. (No model are diagrammatic views of the escapement, and Fig. 31 is an edge view of one of the cams. This invention relates to a new and useful improvement in calculating-1nachines, the

objects being to construct a machine of the character described which is simple in construction and which in operationis accurate and positive in action. The machine is designed to add, register, and record numbers and to expose the total of all the numbers registered in the machine, means being pro vided whereby the total thus accumulated in the machine may be recorded as a footing to indicate the sumv of the items previously registered and recorded.

My invention consists, generally stated, in improvements applicable to machines of the class to which I have referred above and also in the construction, arrangement, and combination of the several parts, all as will hereinafter be described and afterward pointed out in the claims.

In the following description I will endeavor, as far as possible, to describe the construction and operation of the several parts of the machine under appropriateheadings. Before entering into such a detailed description I will briefly outline the cardinal principles of operation.

A roll of paper upon which is to be printed several items is mounted in or adjacent to the printing-head and threaded through appropriate feeding devices, so as to receive the type impressions. The type hammers are designed to deliver an impacting blow, so as to force the paper onto the printing-wheels to make a printing impression. These typehammers are controlled by an operating-handle, which effects their release and permits of the delivery of the impacting blow and subsequently restores said type-hammers to an operative position ready for another operation.

The example to be registered in the machine and recorded on the paper is set up on the keyboard, as is commonly practiced in this class of devices. In setting up an example the movement of the keys operated releases control-bars, which are impelled by connected motors (in this instance springs) to move to one of nine different positions, depending upon thelocation of the key struck. The keys of the keyboard are numbered from 1 to 9 consecutively, and a row of such keys so numbered forms a series. There is a control-bar common to each series of keys. These springactuated control bars drive what is termed an item-train, which itemtrain rotates indicating-wheels and printingwheels, so as to expose the example set up on the keyboard to the view of the operator and also to place in the printingdine the said ex ample. The operator after an example has been set up on the keyboard new sets in motion certain devices which effect a connection between the totalizer-trains and the itemtrains and also restore the item-trains to zero position and place the item thereinbefore indicated in the totalizer -trains. This mechanism in the form of an operating-hamlle upon its initial movement releases the type -hammers before described to make an impression of the item set up in the type-wheels, and subsequently the same operatinghandle restores the type-hammers to a cocked position. In the several totalizer-trains referred to, and there is one of such trains for each item-train, are located transferring devices whereby when a totalizer-trainsay in the unitscolumn is actuated beyond a certain point, as when more than ten units have been totalized in said units-train, what is equivalent to ten of those units is transferred into the totalizertrain identified with the tens-column. This transferring mechanism is operative in the totalizer -trains to drive the next adjacent train of higher order, notwithstanding the fact that said driven train of higher order may at the time it is being driven by the train of lower order also be receiving motion from the item-train. In this manner no exteriorlyarranged dogs or pawls are tripped by a train of lower order, nor are means relied upon, which means are usually only effective when the totalizer-trains are in a position of rest, to apply power in the resetting of the dogs to operate the totalizer-train of higher order.

After a series of items or examples are totalized in the totalizing mechanism, and the correct total is always present in said totalizing mechanism without requiring any additional operation of the machine, and it is desired to determine what that total is certain mechanism is operated which will cause the said total to appear in the item-indicating wheels. This total is also printed at the foot of the column of figures, and after such operation or obtaining the total, as it is called, the said total may be retained in the totalizer or the machine may be cleared.

To prevent improper.operation of the several mechanisms of the machine at improper times, locking and interlocking devices are provided, as will hereinafter be described.

In addition to the above there is also provided what is kn own as the repeating mechanism, which mechanism can be set into position for action when the machine is used to multiply.

The cas z'oig.1 indicates a basc,preferably in the form of a casting, which extends the entire length of the machine.

2 indicates a casing or housing designed to fit snugly on the base-casting to exclude dirt, dust, &c., from the moving parts. This casing is provided with appropriate openings to accommodate the different parts of the machine which project therethrough to the exterior and is also provided with a series of sight-openings immediately to the rear of the keyboard, through which the ind icator-wheels are exposed in order that the operator after setting up an example may from a glance at the indicator-wheels determine whether the example is properly placed in the machine. The keyboard, as it is termed, is so constructed that it is removable as an entirety from the base-casting. The item and totalizer trains are also preferably mounted in a frame removable from the base-casting, and the printing-head is also removably mounted, all of which is a matter of convenience, contributing to the ease of manufacture, readiness in repair, and assemblage of parts.

Ixeyboard.--'lhe keyboard is best shown in Figs. 2-3, 5, 0, and 10. 3 indicates cornerposts secured to the base-casting and supportin g at their upper ends a plate 4:, through which project the depressible keys. These keys are provided with heads 5 at their upper ends,which heads bear numerals, depending upon the position of the key in its series.

(5 indicates the shanks or stems of the keys, which near their lower ends are provided with lateral projections or shoulders 7. (See Fig. 0.) The lower ends of the key-stems pass through a bottom plate 8 and are formed with reduced annuli, in which are arranged stops in the form of spring-washers 0 for arresting the keys in their upward movement.

10 indicates strips extending transversely the keyboard and across the upper face of plate 8, said strips being mounted in longi tudinally-arranged bars 11, as shown in Fig. 9. These strips are formed with alined openings, in each series of which is arranged a pivot-rod 12.

13 indicates stops in the form of bell-crank levers mounted on the rods 12, there being one of such stops for each key in the keyboard. The horizontal member of each of these bell-crank levers is provided with a lateral pin or projection 1%, which cooperates with the shoulder? of its respective key. A spring 15, preferably coiled about the rod 12 and having one end in engagement with the strip 10 and its other end in engagement with the stop 13, bears at all times to swing said step 011 its pivot and to hold the associated key in an elevated position, as determined by the stop 1 :3. The upper end of the stop 13 is provided with a recess 16, forming a hook which when the stop is actuated cooperates with a latch-plate, so that said step is temporarily locked in an abnormal position and its associated key remains depressed. The up per end of the stop is also provided with a 

